Grid Enhancement

High-VoltagePooling&GridInterconnectwith SubstationEPC

At Onix Renewable Ltd, we specialize in delivering complete EPC (Engineering, Procurement, and Construction) services for high-voltage substations and switchyards up to 400kV for public utilities and private IPP developers.

Turnkey Switchyard EPC

Comprehensive Substation Solutions & Equipment Installation

Substations are the nerve centers of the power grid — stepping up renewable generation for long-distance transmission, regulating voltage, and instantly clearing grid faults to prevent cascade blackouts.

With over 60 substations executed across Western India, Onix manages everything from civil control room construction and structural gantry erection to transformer commissioning, telemetry synchronization with state load dispatch centers (SLDC), and final charging.

Design, supply, and erection of 66kV, 132kV, 220kV, and 400kV switchyards

Turnkey pooling substations for utility-scale solar and wind parks

Pre-commissioning testing: Hi-Pot, Tan Delta, Dissolved Gas Analysis (DGA)

Seamless bay extensions in existing state transmission utility (STU) substations

Air Insulated Substations (AIS)

Robust, cost-effective outdoor switchyards engineered for optimal phase clearances, surge arresters, circuit breakers, isolators, and busbar configurations up to 400kV.

Gas Insulated Substations (GIS)

Ultra-compact SF6 gas-insulated indoor switchgears ideal for coastal locations, saline environments, and space-constrained industrial zones with 90% less land footprint.

Power Transformers Installation

Transportation, skidding, nitrogen purging, oil filtration, and commissioning of extra-high-voltage power transformers up to 500 MVA rating.

SCADA & Relay Protection Automation

Integration of state-of-the-art IEC 61850 numerical relays, disturbance recorders, Remote Terminal Units (RTU), and optical communication networks.